【17-21】
         Yesterday was Valentine’s Day. That night, Molly had a bigmeal with her boyfriend, Hank, at a nice restaurant. For this date,Molly dressed up and put on some make-up. On her way to therestaurant, all men on the street couldn’t take their eyes off her.
 “ I must   17      Hank’s eye when he sees me, “ Mollythought. After walking into the restaurant, she took a seat in frontof Hank.   18      her surprise, Hank didn’t even take a look ather. Molly tried to catch his attention again and again, but shefailed. One hour passed, he still kept   19      videos on hissmartphone and said nothing to her. She   20       mad anddecided to leave the restaurant.
 This story   21     us one lesson. Never care about yoursmartphone more than your lover. 
【題組】17.
(A) catch
(B) caught
(C) catching
(D) will catch